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Check a VPN on a phone hotspot before movie night

Check whether your VPN stays in the browser's network path on a phone hotspot, then separate privacy leaks from streaming slowdowns before movie night.

Daniel HayesHardware tests Tests 5 min read

You have a phone hotspot ready for movie night, but you are not sure whether the VPN is protecting the device playing the video. A VPN on the phone does not always cover devices connected to its hotspot.

Check the VPN from the device you plan to watch on, then check whether the connection is fast and steady enough to stream. The VPN Leak Test checks for real IP address exposure through IPv6 or WebRTC in your browser. It does not measure streaming quality or protect every app on the device.

Check the VPN on your hotspot

  1. Turn on the phone hotspot. On Android, look under Settings › Network & internet › Hotspot & tethering. On iPhone, use Settings › Personal Hotspot. On a Windows 11 PC, go to Settings › Network & internet › Mobile hotspot. On a Mac, go to System Settings › General › Sharing › Internet Sharing.
  2. Connect the device you will watch on to the hotspot. If the movie will play on a laptop, connect the laptop to the phone's hotspot. If a TV is connected directly, a test on your phone does not check the TV's browser or apps.
  3. Connect the VPN on the device you are testing. A VPN running on the phone that provides the hotspot may protect the phone's own traffic without routing tethered devices through the VPN. If your VPN service supports tethering protection, follow its instructions. Otherwise, run the VPN on the laptop or other viewing device.
  4. On that same device, open the VPN Leak Test with the VPN connected. Review whether the test detects exposure through IPv6 or WebRTC. Repeat the check if you change VPN connections or switch between the hotspot and another network.
  5. For a separate speed check, run the Speed Test on the viewing device. If you want to compare VPN performance, run it once with the VPN connected and once without it. Only do the second check if you are comfortable briefly using the internet without the VPN. The speed test exchanges test data with our server.

What the result means

No IP exposure is detected

The browser test did not find a real IP address exposed through the IPv6 or WebRTC paths it checks at that moment. This is a useful sign for that browser session, but it is not proof that every app, device, or type of network traffic is protected. Test the browser on the actual device you will use, and keep the VPN connected during the movie.

The test detects an exposed address

The browser appears to be revealing an address outside the VPN connection through a path the test checks. Confirm that the VPN is connected on this device, then run the test again. If the result persists, check the VPN app's leak protection settings or contact its support before relying on it for privacy.

The phone passes, but the laptop does not

Each device has its own network connection and browser behavior. A test on the hotspot phone only checks that phone's browser. It does not prove that a laptop, tablet, or TV connected to the hotspot is using the phone's VPN tunnel.

The test finds no leak, but the movie still buffers

A leak check is about IP exposure, not speed. A hotspot can have a weak cellular signal, a busy mobile network, or limited data service. A VPN can also reduce available speed or add delay, especially when its server is far away. Compare the Speed Test results and check whether they change when the VPN is connected.

How to fix VPN or hotspot problems

  1. Run the VPN on the device playing the movie. Connect the laptop, tablet, or other supported device to the hotspot, then start its VPN app. Do not assume a VPN on the hotspot phone automatically covers every connected device.
  2. Reconnect the hotspot and VPN. Disconnect the viewing device from Wi-Fi, turn the hotspot off and back on, reconnect, and then reconnect the VPN. On Android, check Settings › Network & internet › Hotspot & tethering. On iPhone, check Settings › Personal Hotspot.
  3. Check for split tunneling. Some VPN apps let selected apps or websites bypass the VPN. Look in the VPN app for split tunneling or app exclusions, and make sure the browser you tested is not excluded. The exact menu name depends on the VPN app.
  4. Review IPv6 protection in the VPN app. If the test reports IPv6 exposure, check the VPN provider's instructions for IPv6 leak protection or supported network settings. Avoid changing system-wide network options unless the provider recommends it.
  5. Improve the hotspot's cellular connection. Move the phone near a window or to a spot with a stronger mobile signal. Pause large downloads on other devices, then rerun the speed check. If speed varies greatly, try another location or time of day.
  6. Reduce the stream's data demand. If the connection is stable but cannot keep up with the selected video quality, lower the streaming resolution or pause other high-bandwidth activity on the hotspot.

Why a phone VPN may not cover hotspot devices

Hotspot sharing and VPN routing are separate parts of a phone's network setup. Some phones or VPN services can route tethered traffic through the phone's VPN, while others only protect traffic from apps running on the phone itself. Behavior can also differ by phone model, operating system, VPN protocol, and service settings.

A browser-based leak test can only report what its browser sees on the device where you open it. If the movie plays on a device that cannot run the test, check the VPN provider's guidance for that device or install the VPN on another supported device that shares the same hotspot. The test does not certify that a connection is anonymous or that every app uses the VPN.

Run the leak check again after changing networks, VPN settings, or devices, since the result describes the current browser connection.

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